Dotment
氧化铝
🗣️ 情景例句
May I take your order?
可以点菜了吗？
Please make sure that the goods be protected from moisture.
请保证货物不受潮。
it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
提出把它作为星际间唯一可辨认的广播频率就为期不远了。